Cell Theory
The cell is the basic unit of ____ & ____ in ALL living things.
structure
function
A gel-like material inside the cell membrane and outside the nucleus.
Cytoplasm
There are two basic types of cells—cells without a _____ and cells with a ______.
nucleus
nucleus
This cell does NOT have cell walls.
Animal cells
As a cell gets larger, it needs more _____ and produces more _____.
food
waste
_______ tissues and organs are made of ______ kinds of cells.
Different
different
These are structures that perform specific functions within the cell.
Organelles
Name the two kinds of cells.
1) Prokaryotic
(proh KAR ee AHT ik)
2) Eukaryotic
(yoo KAR ee AHT ik)
This does NOT exist in an animal cell.
Chloroplasts
If a cell gets too big, the surface area will not be large enough to do these two things.
1) Take in enough nutrients
2) Pump out enough waste
Traits from Genetic information (DNA) are ______ from one generation to the next generation through reproduction.
Hint: cell division.
passed
_______ is a protective layer that covers the cell’s surface and acts as a _______.
Cell membrane
barrier
This type of cell is classified as archaea and bacteria.
Prokaryotic Cells
These store water, food, and waste.
Why are cells so small?
Amount of surface area does NOT increase proportionally to the increase in volume as the cell gets larger. (volume grows faster than S.A.)
Anton van Leeuwenhoek was the first scientist to see these single-celled organisms.
Bacteria
DAILY DOUBLE
Cells can have different shapes, sizes and functions, but all cells have: ________, _________, ________and DNA.
cell membranes, organelles, and cytoplasm
This type of cell can be multicellular or single celled.
Eukaryotic Cells
Both animal and plant cells have these organisms that make protein.
Ribosomes
Skin cells are broad and flat while blood cells have these two features.
1) Small
2) Round
Name the three parts of the cell theory.
1) All organisms made of one or more than one cell
2) The cell is the basic unit of life
3) Cells come from existing cells
Mitochondria, known as the "power plant" of the cell, are responsible for these two things.
1) Breaking down food molecules
2) Releasing energy
The nucleus is only in this cell.
Eukaryotic
This is a folded membrane that moves materials around an animal cell.
Endoplasmic Reticulum (ER)
Nerve cells are very long, helping them to deliver "messages" throughout the body; bacteria cells have this technical name to help them move around.